Adjustable posture support



FIG. 1 is a front elevational view of an adjustable posture support, showing my new design, in open condition;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a side elevational view thereof;

FIG. 4 is a rear elevational view thereof, in use condition;

FIG. 5 is a side elevational view thereof, in use condition; and,

FIG. 6 is a side elevational view thereof, opposite that shown in FIG. 3.

The broken line showing in FIGS. 4 and 5 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for an adjustable posture support, as shown and described. 